Update .gitignore

Author: cogniware-devops

.gitignore

@@ -6,3 +6,9 @@
 **/test-results/
 
 __pycache__/
+__MACOSX/CogniwareIms/frontend/public/images/._opea-stacked-logo-rwd.png
+__MACOSX/CogniwareIms/frontend/public/._.DS_Store
+__MACOSX/CogniwareIms/frontend/._.DS_Store
+__MACOSX/CogniwareIms/backend/app/._.DS_Store
+__MACOSX/CogniwareIms/backend/._.DS_Store
+__MACOSX/CogniwareIms/._.DS_Store